Ventilator for windows.



W. W. BAIRD.

VENTILATOR FOR WINDOWS.

APPucAnou man MAR. 6, 1916.

Patented Mar. 6, 1917.

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canon WARREN W. BAIRD, OF. PITTSBURGH, PENNSYLVANIA. Y

VENTILATOR, FOR WINDOWS.

Specification of Letters latent. I

Patented Mar. 6,1917.

Application filed March 6, 1916. Serial No. 82,302.

letters and figures of reference marked thereon, which form a part ofthis specification.

This invention relates to an improvement in ventilators for window use,and it comprises a device adapted to be placed beneath the window sash,and resting upon the win dow sill and held in position by the weight ofsaid sash. v

The invention further consists in a means whereby the air currentsentering the room, may be deflected upward, downward or in bothdirections at one and the same time, or said currents may be shut offentirely.

The inventionfurther consists in providing sliding extension pieces ateach end of the body-portion of the ventilator, whereby the same may beadjusted to fit windows of varying widths, and the invention stillfurther consists of the certain details of construction and combinationof parts, as will be fully described hereinafter.

In the accompanying drawings Figure 1 is an end sectional elevation ofmy improved ventilator, showing the same positioned beneath the sash andwithin the frame of a window, the section through the ventilator beingindicated by the line Y Y, on Fig. 3.

Fig. 2 is an end section taken on the line w, m, Fig. 3.

Fig. 3 is an inside elevation of the ventilator.

Fig. 4 is an edge view of the body-portion of the ventilator.

To construct a ventilator in accordance with my invention, I firstprovide a rectangular shaped body-portion 3, preferably of wood, andprovided with a rectangular opening 6, extending in the direction of thelength of said body. This body-portion 3,

I is formed along its top edge with a tongue 4,

to engage with the window sash 1, and the bottom edge with a similartongue 5, to engage with the window sill 2, below. Covering the opening6, is a wire netting 7, and an outwardly-projecting hood 8, said hood being open at the base and having closed ends. Attached to thebody-portion 3, and at either end of the opening 6, are twooutwardly-extending brackets 9, having slots 10, adapted tov receivethreaded pins 12, attached at either end of a lid or cover 14, which isadapted to close or cover the opening 6. This cover 14, I prefer to bedished or in semi-circular form and having closed ends. The screw pins12, attached to each end of the cover are fitted with thumb nuts 12,

'which when tightened or screwed against the brackets 9, and the coveradjusted to the desired position,-will hold the latter rigid.

Each end of the body-portion 3, is slotted vertically to receiveslidable extension pieces 16, adapted to be moved in the direction ofthe length of said body, and held by thumb screws 18, said screwsoperating in longitudinally-arranged slots 15. This construction permitadjustment to accommodate the device to windows of varying width.

At Fig. 1, of the drawings, the cover 14,

is adjusted to entirely cover and close the opening 6, and in dottedlines the cover is shown in an altered position, which position willdeflect the air currents upward and downward, as indicated by the arrowsshown in dotted lines.

At Fig. 2 of the drawings, the cover 14:, is set to deflect the aircurrents downward, and on the same figure, the cover is shown in dottedlines in a position whereby the air currents will be directed upward.

The four positions of the cover 1 1, as

above described, give the person using the ventilator the choice ofdeflecting the air currents entering the room in the several directionsabove mentioned.

Having thus described my invention, I claim A ventilator for window use,comprising a rectangular body portion having a longitudinal opening,means comprising a tongue formed along the top edge of said body portionfor engaging with the lower rail of a window sash, and similar means forengaging With'the Window sill formed along the able thumb nuts operatingupon said pins to length of the bottom edge of said body-porclamp saidcover at varying positions. 19 tion whereby said body may be held 'in aIn testimony whereof, I afiix ny signature vertical position, slottedbrackets arranged in presence of two Witnesses.

at either end of said opening,' a cover WARREN W. BAIRD. adapted toclose said opening,-threaded pins Witnesses:

attached to either end of said cover, said H. E. HARRISON,

pins projecting through said slotsfand suit- O'r'ro A. HENSEL.

Copies of this patent may be obtained for five cents'each, by'addressing'the Commissioner of Patents, Washington, D. G.

